People bundled up against the cold attend the 'We Are One" concert, one of the events of US president-elect Barack Obama's inauguration celebrations, at the Lincoln Memorial in Washington on January 18, 2009.

Photo: Robyn Beck, AFP/Getty Images

People bundled up against the cold attend the 'We Are One" concert,...

People bundled up against the cold attend the 'We Are... Photo-2072092.36067 - SFGate

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Several hundred thousand people gather on the National Mall on Sunday, Jan. 18, 2009 in Washington, during the " We Are One: Opening Inaugural Celebration at the Lincoln Memorial.

Photo: Pat Jarrett, AP

Several hundred thousand people gather on the National Mall on...

Several hundred thousand people gather on the National Mall on... Photo-2072093.36067 - SFGate

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A pedestrian has her photo taken with an Obama cut-out in Washington, Sunday, Jan. 18, 2009. Several hundred thousand people gathered on the National Mall on Sunday, during the " We Are One: Opening Inaugural Celebration at the Lincoln Memorial.

Photo: Pat Jarrett, AP

A pedestrian has her photo taken with an Obama cut-out in...

A pedestrian has her photo taken with an Obama cut-out in... Photo-2072094.36067 - SFGate

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Security agents watch the crowd from atop the Lincol Memorial at the 'We Are One" concert, one of the events of US president-elect Barack Obama's inauguration celebrations, at the Lincoln Memorial in Washington on January 18, 2009.

Two women walk past bicycles that are locked to a fence along Constitution Ave in Washington, Sunday, Jan. 18, 2009. Several hundred thousand people gathered on the National Mall on Sunday, during the " We Are One: Opening Inaugural Celebration at the Lincoln Memorial.

Photo: Pat Jarrett, AP

Two women walk past bicycles that are locked to a fence along...

Two women walk past bicycles that are locked to a fence along... Photo-2072096.36067 - SFGate

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In this photo provided by the Department of Defense, an, American Bald Eagle, spreads its wings on stage during the " We Are One: Opening Inaugural Celebration at the Lincoln Memorial" in Washington, Sunday, Jan. 18, 2009. AP Photo/Department of Defense, Daniel J. Herrera)

Photo: Daniel J. Herrera, AP

In this photo provided by the Department of Defense, an, American...

In this photo provided by the Department of Defense, an, American... Photo-2072097.36067 - SFGate

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Several hundred thousand people gather on the National Mall on Sunday, Jan. 18, 2009 in Washington, during the " We Are One: Opening Inaugural Celebration at the Lincoln Memorial.

Photo: Pat Jarrett, AP

Several hundred thousand people gather on the National Mall on...

Several hundred thousand people gather on the National Mall on... Photo-2072098.36067 - SFGate

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People bundle up against the cold while watching the 'We Are One: The Obama Inaugural Celebration At The Lincoln Memorial' on January 18, 2009 at the National Mall in Washington, DC. The event includes a diverse array of talent featuring both musical performances and historical readings and an appearance by U.S. President-elect Barack Obama.

Photo: Chip Somodevilla, Getty Images

People bundle up against the cold while watching the 'We Are One:...

People bundle up against the cold while watching the 'We Are... Photo-2072099.36067 - SFGate

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People dance while watching the 'We Are One: The Obama Inaugural Celebration At The Lincoln Memorial' on January 18, 2009 at the National Mall in Washington, DC. The event includes a diverse array of talent featuring both musical performances and historical readings and an appearance by U.S. President-elect Barack Obama.

Photo: Chip Somodevilla, Getty Images

People dance while watching the 'We Are One: The Obama Inaugural...

People dance while watching the 'We Are One: The Obama... Photo-2072100.36067 - SFGate

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A child waves a U.S. flag with the face of President-elect Barack Obama printed on it during the 'We Are One: The Obama Inaugural Celebration At The Lincoln Memorial' on January 18, 2009 at the National Mall in Washington, DC. The event includes a diverse array of talent featuring both musical performances and historical readings and an appearance by U.S. President-elect Barack Obama.

Photo: Chip Somodevilla, Getty Images

A child waves a U.S. flag with the face of President-elect Barack...

A child waves a U.S. flag with the face of President-elect Barack... Photo-2072101.36067 - SFGate

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People bundled up against the cold watch the 'We Are One" concert, one of the events of US president-elect Barack Obama's inauguration celebrations, at the Lincoln Memorial in Washington on January 18, 2009.

Photo: Robyn Beck, AFP/Getty Images

People bundled up against the cold watch the 'We Are One" concert,...

People bundled up against the cold watch the 'We Are One"... Photo-2072102.36067 - SFGate

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People bundled up against the cold watch the 'We Are One" concert, one of the events of US president-elect Barack Obama's inauguration celebrations, at the Lincoln Memorial in Washington on January 18, 2009.

Photo: Robyn Beck, AFP/Getty Images

People bundled up against the cold watch the 'We Are One" concert,...

People bundled up against the cold watch the 'We Are One"... Photo-2072103.36067 - SFGate

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A child waves a U.S. flag with the face of President-elect Barack Obama printed on it during the 'We Are One: The Obama Inaugural Celebration At The Lincoln Memorial' on January 18, 2009 at the National Mall in Washington, DC. The event includes a diverse array of talent featuring both musical performances and historical readings and an appearance by U.S. President-elect Barack Obama.

Photo: Chip Somodevilla, Getty Images

A child waves a U.S. flag with the face of President-elect Barack...

A child waves a U.S. flag with the face of President-elect Barack... Photo-2072104.36067 - SFGate

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People bundled up against the cold watch the 'We Are One" concert, one of the events of US president-elect Barack Obama's inauguration celebrations, at the Lincoln Memorial in Washington on January 18, 2009.

Photo: Robyn Beck, AFP/Getty Images

People bundled up against the cold watch the 'We Are One" concert,...

People bundled up against the cold watch the 'We Are One"... Photo-2072105.36067 - SFGate

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People bundled up against the cold watch the 'We Are One" concert, one of the events of US president-elect Barack Obama's inauguration celebrations, at the Lincoln Memorial in Washington on January 18, 2009.

Photo: Robyn Beck, AFP/Getty Images

People bundled up against the cold watch the 'We Are One" concert,...

People bundled up against the cold watch the 'We Are One"... Photo-2072106.36067 - SFGate

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People bundled up against the cold watch the 'We Are One" concert, one of the events of US president-elect Barack Obama's inauguration celebrations, at the Lincoln Memorial in Washington on January 18, 2009.

Photo: Robyn Beck, AFP/Getty Images

People bundled up against the cold watch the 'We Are One" concert,...

People bundled up against the cold watch the 'We Are One"... Photo-2072107.36067 - SFGate

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US President-elect Barack Obama and his wife Michelle wave at the 'We Are One" concert, one of the events of Obama's inauguration celebrations, at the Lincoln Memorial in Washington on January 18, 2009.

US president-elect Barack Obama's daughter Malia (L) and Sasha (R) walk past a group of photographers as they arrive at the 'We Are One" concert, one of the events of Obama's inauguration celebrations, at the Lincoln Memorial in Washington on January 18, 2009.

US president-elect Barack Obama's daughter Malia (L) and Sasha (R) attend the 'We Are One" concert, one of the events of Obama's inauguration celebrations, at the Lincoln Memorial in Washington on January 18, 2009.

Malia Obama looks on during the 'We Are One: The Obama Inaugural Celebration At The Lincoln Memorial' on January 18, 2009 at the National Mall in Washington, DC. The event includes a diverse array of talent featuring both musical performances and historical readings and an appearance by U.S. President-elect Barack Obama.

Photo: Chip Somodevilla, Getty Images

Malia Obama looks on during the 'We Are One: The Obama Inaugural...

Malia Obama looks on during the 'We Are One: The Obama... Photo-2031939.36067 - SFGate

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Malia Obama looks on during the 'We Are One: The Obama Inaugural Celebration At The Lincoln Memorial' on January 18, 2009 at the National Mall in Washington, DC. The event includes a diverse array of talent featuring both musical performances and historical readings and an appearance by U.S. President-elect Barack Obama.

Photo: Chip Somodevilla, Getty Images

Malia Obama looks on during the 'We Are One: The Obama Inaugural...

Malia Obama looks on during the 'We Are One: The Obama... Photo-2072111.36067 - SFGate

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US president-elect Barack Obama poses for a snapshot with two unidentified boys on the stage at the end of the 'We Are One" concert, one of the events of Obama's inauguration celebrations, at the Lincoln Memorial in Washington on January 18, 2009.

Photo: Robyn Beck, AFP/Getty Images

US president-elect Barack Obama poses for a snapshot with two...

US president-elect Barack Obama poses for a snapshot with two... Photo-2072112.36067 - SFGate

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U.S. President-elect Barack Obama waves to the crowd in front of the Lincoln Memorial during the 'We Are One: The Obama Inaugural Celebration At The Lincoln Memorial' on January 18, 2009 at the National Mall in Washington, DC. The event includes a diverse array of talent featuring both musical performances and historical readings and an appearance by U.S. President-elect Barack Obama.

Rt. Reverend V. Gene Robinson speaks on stage during the "We Are One: The Obama Inaugural Celebration At The Lincoln Memorial" on January 18, 2009 at the National Mall in Washington, DC. The event includes a diverse array of talent featuring both musical performances and historical readings and an appearance by U.S. President-elect Barack Obama.

Episcopal Bishop Gene Robinson, the first openly gay Episcopal bishop, delivers the invocation at the 'We Are One" concert, one of the events of Obama's inauguration celebrations, at the Lincoln Memorial in Washington on January 18, 2009.

People bundled up against the cold attend the 'We Are One" concert, one of the events of US president-elect Barack Obama's inauguration celebrations, at the Lincoln Memorial in Washington on January 18, 2009.

Photo: Robyn Beck, AFP/Getty Images

People bundled up against the cold attend the 'We Are One" concert,...

People bundled up against the cold attend the 'We Are... Photo-2072118.36067 - SFGate

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Garth Brooks performs at the 'We Are One" concert, one of the events of US president-elect Barack Obama's inauguration celebrations, at the Lincoln Memorial in Washington on January 18, 2009.

Garth Brooks performs the song "Shout" by the Isley Brothers at the 'We Are One" concert, one of the events of US president-elect Barack Obama's inauguration celebrations, at the Lincoln Memorial in Washington on January 18, 2009.

Photo: Robyn Beck, AFP/Getty Images

Garth Brooks performs the song "Shout" by the Isley Brothers at the...

Garth Brooks performs the song "Shout" by the Isley... Photo-2072120.36067 - SFGate

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Musician Garth Brooks performs in front of the Lincoln Memorial during the 'We Are One: The Obama Inaugural Celebration At The Lincoln Memorial' on January 18, 2009 at the National Mall in Washington, DC. The event includes a diverse array of talent featuring both musical performances and historical readings and an appearance by U.S. President-elect Barack Obama.

People bundled up against the cold attend the 'We Are One" concert, one of the events of US president-elect Barack Obama's inauguration celebrations, at the Lincoln Memorial in Washington on January 18, 2009.

Photo: Robyn Beck, AFP/Getty Images

People bundled up against the cold attend the 'We Are One" concert,...

People bundled up against the cold attend the 'We Are... Photo-2072123.36067 - SFGate

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John Mellencamp performs during "We Are One: Opening Inaugural Celebration at the Lincoln Memorial" in Washington, Sunday, Jan. 18, 2009.

Singer John Mellencamp performs at the "We Are One: Opening Inaugural Celebration at the Lincoln Memorial in Washington, Sunday, Jan. 18, 2009.

Photo: Jeff Christensen, AP

Singer John Mellencamp performs at the "We Are One: Opening...

Singer John Mellencamp performs at the "We Are One: Opening... Photo-2072125.36067 - SFGate

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Bruce Springsteen (R), Pete Seeger (C), and Seeger's grandson Tao Seeger (L) perform at the 'We Are One" concert, one of the events of US president-elect Barack Obama's inauguration celebrations, at the Lincoln Memorial in Washington on January 18, 2009.

Pete Seeger (L) and Bruce Springsteen (R) perform during the ?We are One? Inaugural Celebration at the Lincoln Memorial January 18, 2009 in Washington, DC. A galaxy of stars including Springsteen, U2 and Stevie Wonder will usher Obama into the White House, with a half-million people expected to brave the cold to celebrate the first African-American president.

Bruce Springsteen (R), Pete Seeger (C), and Seeger's grandson Tao Seeger (L) perform at the 'We Are One" concert, one of the events of US president-elect Barack Obama's inauguration celebrations, at the Lincoln Memorial in Washington on January 18, 2009.

Jennifer Nettles (R), John Legend (L) and James Taylor (C) perform at the 'We Are One" concert, one of the events of US president-elect Barack Obama's inauguration celebrations, at the Lincoln Memorial in Washington on January 18, 2009.

James Taylor performs at the 'We Are One" concert, one of the events of US president-elect Barack Obama's inauguration celebrations, at the Lincoln Memorial in Washington on January 18, 2009.

Photo: Robyn Beck, AFP/Getty Images

James Taylor performs at the 'We Are One" concert, one of the...

James Taylor performs at the 'We Are One" concert, one of... Photo-2072139.36067 - SFGate

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Opera singer Renee Fleming sings with the U.S. Naval Academy Glee Club in front of the Lincoln Memorial during the 'We Are One: The Obama Inaugural Celebration At The Lincoln Memorial' on January 18, 2009 at the National Mall in Washington, DC. The event includes a diverse array of talent featuring both musical performances and historical readings and an appearance by U.S. President-elect Barack Obama.

U.S. President-elect Barack Obama (L) and Vice President-elect Joeseph Biden (R) meet golfer Tiger Woods (C) during the 'We Are One: The Obama Inaugural Celebration at The Lincoln Memorial" January 18, 2009 in Washington, DC. The event includes a diverse array of talent featuring both musical performances and historical readings and an appearance by U.S. President-elect Barack Obama.

U.S. President-elect Barack Obama (L) shakes hands with golfer Tiger Woods (R) during the 'We Are One: The Obama Inaugural Celebration at The Lincoln Memorial" January 18, 2009 in Washington, DC. The event includes a diverse array of talent featuring both musical performances and historical readings and an appearance by U.S. President-elect Barack Obama.

Golfer Tiger Woods speaks at the 'We Are One: The Obama Inaugural Celebration at The Lincoln Memorial" January 18, 2009 in Washington, DC. The event includes a diverse array of talent featuring both musical performances and historical readings and an appearance by U.S. President-elect Barack Obama.

U.S. President-elect Barack Obama (L) gets a hug from Usher during the 'We Are One: The Obama Inaugural Celebration at The Lincoln Memorial" January 18, 2009 in Washington, DC. The event includes a diverse array of talent featuring both musical performances and historical readings and an appearance by U.S. President-elect Barack Obama.